uni-analytics-sdk/rollup.config.js

A universal SDK for analytics and logging.

/**
 * @fileoverview This is the configuration file for Rollup, which is used to
 * bundle the Universal SDK into various formats for distribution (CommonJS, ESM, UMD).
 */

import typescript from '@rollup/plugin-typescript';
import { nodeResolve } from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import terser from '@rollup/plugin-terser';
import { dts } from 'rollup-plugin-dts';
import polyfillNode from 'rollup-plugin-polyfill-node';
// FIX: Import the newly installed alias plugin.
import alias from '@rollup/plugin-alias';

import fs from 'fs';
// FIX: Import path and url to correctly resolve file paths in an ES Module context.
import path from 'path';
import { fileURLToPath } from 'url';

const packageJson = JSON.parse(fs.readFileSync(path.resolve('./package.json'), 'utf-8'));
const umdGlobalName = 'UniversalSDK';

// Helper to resolve the project root directory.
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

export default [
  // --- Main Bundles (CommonJS and ES Module) ---
  {
    input: 'src/index.ts',
    output: [
      {
        file: packageJson.main, // dist/index.cjs.js
        format: 'cjs',
        sourcemap: true,
      },
      {
        file: packageJson.module, // dist/index.esm.js
        format: 'esm',
        sourcemap: true,
      },
    ],
    plugins: [
      nodeResolve(),
      commonjs(),
      typescript({ tsconfig: './tsconfig.json' }),
    ],
    external: ['tslib'],
  },

  // --- Browser UMD Bundle (for CDN and direct script tags) ---
  {
    input: 'src/index.ts',
    output: {
      file: packageJson.browser, // dist/sdk.min.js
      format: 'umd',
      name: umdGlobalName,
      sourcemap: true,
    },
    plugins: [
      nodeResolve({ browser: true }),
      commonjs(),
      polyfillNode(),
      typescript({ tsconfig: './tsconfig.json' }),
      terser(),
    ]
  },

  // --- TypeScript Declaration File Bundle ---
  {
    input: 'dist/types/index.d.ts',
    output: [{ file: 'dist/index.d.ts', format: 'esm' }],
    plugins: [
      dts(),
      // FIX: Add the alias plugin to resolve the '@/' path alias inside the .d.ts files.
      alias({
        entries: [
          { 
            find: '@', 
            // This tells Rollup that '@/' should point to the root of our generated types directory.
            replacement: path.resolve(__dirname, 'dist/types') 
          }
        ]
      })
    ],
  },
];